Clutch.



H. AST.

, GLUTQH.

"APPLICATION FILED JUNE 15, 1906.

599,822, .Eatentd Sept. 29, 1908,

mw MQJM i *naseasea.

aspecification.

' or by means of separate hearing pieces upon Apart from the injurious frictional losses the .moved relatively: to the stationary HEI RICH AST, OF VIENNA, A STRIA-H NGARY, ssrceion TO THE FIRM. or VULKAN MASOHINENFABRIKS-AOTIEN-GESELLSQHAFT, OF-VIENNA, AUSTRIA-HUNGARY.

cLU'rcn.

To'aZZ whom it may concern." Be it known that-I, HEINRICH -AsT, subject' of the Emperor of Austria-Hungary, residing at Vienna, Austria-Hungary, have invented certain new and useful Improvements in Clutches, of which the following is y The object of the present invention is to produce a clutch .provided with means adapted to keep the two parts of the clutch, (which parts e. g., in electro-magnetic clutches are attracted towards eachother and are mounted upon the sanie shaft) a art in such a Way that, when the clutc is thrown out of*operation, the part of the clutch which runs idle is prevented from jamming sidewise' without any axial pres sure producing friction being caused, so that the lrictional surfaces are protected from Wear, the part of the clutch thrown out. of operation. is prevented from being automatically carried along, and in electromagnetic clutches the residual magnetism is t iereb caused to disappear more quickly. The mechanism hitherto employed for this purpose by no means fulfils these requirements efliciently because, when the one part of theclutch is stationary, the springsemployed, and which are mounted in recesses in one part of the clutch and press directly faces of the other part of the clutch, are part by the rotation of the other part. In t is way the pressure surfaces are ground away, dis' tort1on of. the springs and in consequence thereof automatic carrying along of the driven part readily'oc'curs; this disadvantage is present even'when a common hearing ring is employed for the springs, which ring is secured against twisting on the part of the clutch which carries the springs.

certainty of theclutch working js also greatly reduced thereby. 1;, (I;

In a clutch according to this invention the means provided for the purpose obviate these disadvantages. Such means consist substantially in the provision of a running sleeve for the one part of the clutch, suchsleeve being longer than the hub of. this clutch part and being so connected therewith that movement of the clutch part on the running sleeve by the s ring fdfcc which comes into action, when Specification oi. Letters Patent. Application filedJune 15, 1906. Serial No. 321,868.

t e clutch is thrown out of operation, can.

Patented Se t. 29, 1908.

take place butno twisting. In consequence of this construction there results com lete regularity of the springpressure an the loosely running part of the clutch can move with the running sleeve without anyfriction on the other'keyed or fast part of the clutch and consequently without influencing the latter.

In the accompanying drawings which show special constructional forms of such improved clutch, Figure 1, illustrates the separating means as a helical spring arranged concentrically about a loose sleeve;

Figs. 2 and 3, several helical springs arranged around the sleeve; and Fig. 4, blade springs arran ed upon said sleeve.

In all' the gures of such drawing a indi-- cates the clutch part which is fast or keyed, b the loosely running part ofthe clutch, and c the runnin sleeve, which is so connected with the hu of the part b of the clutch, as by a feather and groove 01 or in any'other suitable way, that thepart b of the clutch can execute an axial movement but cannot twist or move relatively in an angular direction upon. the running sleeve 0.

The running sleeve 0 is provided with a collar f and, in the construction shown in Fig. 1, a helical spring e is arranged concen-.

.trically around the sleeve bearing on the one hand against the collar f of the sleeve and on the other hand against the'hub of the movable part b of the clutch. In the osition occu ied by the clutch part b w en the clutc is thrown out of operation the sprin pressure is received by a ring 9 connecte with the sleeve 0 and forming a second collar thereon.

Fi s. 2 and 3 show constructional forms in which, instead of one concentrically mounted helical s ring e several smaller s rings e are. arrange around .the sleeve 0 an are carried in recesses formed in the hub of the clutch part b (Fig; 2) or in the collar f of the sleeve s- As shown in Fig. 4, blade s rings (1 may be arranged upon the running s eeve 0 between the collar f and the hub for the same purpose.

Claims. 1. In electro-magnetic clutches: ashaft; a clutch member fixed thereon; a loose clutch member; a running sleeve free to turn upon said shaft and of greater length than said loose clutch member, and connected thereto in such a manner as to allow the latter only longitudinal motion with respect to the former; a collar on said running sleeve;rand means exertin a yielding ressure between said collar anr said loose c utch member.-

2 In electro-magnetie clutches: a shaftya clutch member fixed thereon; a loose clutch member; a running sleeve free to turn upon said shaft and of greater length thansaid.

loose clutch member, and connected thereto in such amanner as to allow the latter only longitudinal motion with respect to the former; a collar on said running sleeve; means exerting a yielding pressure between said collar and said loose clutch member; and a second collar on said running sleeve against which said loose clutch member abuts in its terminal position.

3. In electro magnetic clutches: a shaftya clutch member fixed thereon; a loose clutch member; a running sleeve free to turn upon said shaft and of greater length than said loose clutch member, and connected thereto in such a manner as to allow the latter only loose clutch member, and connected thereto in. such a manner as to allow the latter; only longitudinal motion with respect to the formerya collar on sald running sleeve; and a pressure spring arranged concentrically about the running sleeve between the said collar and the hub of said loose clutch member.

In testimony whereof I- have hereunto set my hand in presence of two subscribing witnesses. v i

a v HEINRICH AST. Witnesses:

JosEF RUBARoK, ALvns'ro S. HOGUE. 

